2015 GMC Sierra Denali
Only 22 complaints on file — too few for a fair verdict.
This verdict reflects complaint volume compared to this model's typical year. Recalls and safety issues below apply regardless of the verdict — always check them.
Only 22 complaints on file — too few for a fair verdict. The data below is complete but unranked.
COMPLAINTS PER YEAR
View as data table
| Year | Complaints |
|---|---|
| 2002 | 13 |
| 2004 | 11 |
| 2005 | 4 |
| 2006 | 5 |
| 2007 | 1 |
| 2008 | 18 |
| 2009 | 7 |
| 2010 | 10 |
| 2011 | 28 |
| 2012 | 10 |
| 2013 | 8 |
| 2014 | 14 |
| 2015 | 22 |
| 2016 | 30 |
| 2017 | 14 |
| 2018 | 17 |
| 2019 | 26 |
| 2020 | 9 |
KNOWN PROBLEM AREAS
Only 22 complaints on file for this model year -- too few to rank by share. Raw counts only, below.
7 of 22 total reports mention: service brakes.
Show complaint excerpts
HARD BRAKE PEDAL. AT LOW SPEED THE BRAKE PEDAL GETS REALLY HARD AND MAKES IT HARD TO STOP THE TRUCK. PEDAL HAS TO GET PUSHED REALLY HARD TO BARELY STOP FROM HITTING OTHER VEHICLES. ONGOING ISSUE.
NHTSA ODI report, 20180204
5 of 22 total reports mention: power train.
Show complaint excerpts
The contact owns a 2015 GMC Sierra 1500 Denali. The contact stated that while shifting the vehicle from park(P) to drive(D), the vehicle hesitated and then jerked into gear.
NHTSA ODI report, 20240308
STARTING THE VEHICLE I'M PUTTING THE TRUCK IN REVERSE, THE TRUCK LUNGES BACKWARDS. ALSO A VIOLENT JERK OF THE VEHICLE HAPPENS. THIS HAPPENS A MAJORITY OF THE TIME. PUTTING THE VEHICLE INTO GEAR TO DRIVE I HAVE A VIOLENT JERK AND A LOUD NOISE.
NHTSA ODI report, 20180525
3 of 22 total reports mention: electrical system.
CRASHShow complaint excerpts
TL* THE CONTACT OWNS A 2015 GMC SIERRA DENALI. THE CONTACT STATED THAT THE VEHICLE EXHIBITED NUMEROUS ELECTRICAL FAILURES.
NHTSA ODI report, 20171013
1 of 22 total reports mentions: structure.
Show complaint excerpts
TL* THE CONTACT OWNS A 2015 GMC SIERRA DENALI. WHILE OPERATING THE VEHICLE, RAIN WATER FROM THE ROOF MOUNTED ANTENNA LEAKED INTO THE PASSENGER SIDE CABIN.
NHTSA ODI report, 20170608
1 of 22 total reports mentions: steering.
Show complaint excerpts
TL* THE CONTACT OWNS A 2015 GMC SIERRA DENALI. WHILE DRIVING APPROXIMATELY 60 MPH, THE STEERING LOST POWER AND THE POWER STEERING WARNING INDICATOR ILLUMINATED.
NHTSA ODI report, 20171220
SAFETY TIMELINE
No recalls on file for this model year.
Desiccated Air Bag Inflator Rupture
BUY-SMART CHECKLIST
2015 GMC Sierra Denali — pre-purchase inspection
- Test/inspect for service brakes issues (7 reports on file for this year).
- Test/inspect for power train issues (5 reports on file for this year).
- Test/inspect for electrical system issues (3 reports on file for this year).
FAQ
Is the 2015 GMC Sierra Denali reliable?
There isn't enough NHTSA complaint data on file yet to give this model year a verdict.
What are the most common problems with the 2015 GMC Sierra Denali?
The most-reported component is service brakes, accounting for 32% of complaints on file.
How many recalls does the 2015 GMC Sierra Denali have?
No recalls are on file for this model year.
Data updated 2026-07-11 · Complaints are unverified owner reports filed with NHTSA, not independently verified defects. Methodology.